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Aviation safety reports, made easier to study

NTSB Reports is an independent research and search tool for public aviation accident and incident records. It brings NTSB aviation reports, structured fields, docket files, extracted figures, photos, videos, and update history into one searchable interface.

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October 13, 1990 · Skytek Skyseeker MK II Skyseeker · UNREG

Chapman, ME

Overview

Report Status
Probable Cause
Event Type
Accident
Date
October 13, 1990
Injury Outcomes
2 injuries (2 fatalities)
Location
Chapman, ME
Aircraft
Skytek Skyseeker MK II Skyseeker
Tail Number
UNREG
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
NYC91DNC01

THE AIRCRAFT WAS OBSERVED 'BOBBING UP AND DOWN' AS THE PILOT PERFORMED MANEUVERS DURING THE LOCAL PLEASURE FLIGHT. WITNESSES STATED THAT THEY HEARD A BANG AND SAW THE OUTBOARD SECTION OF THE RIGHT WING FOLD UP BEFORE THE AIRCRAFT DESCENDED INTO THE GROUND. THE NON-CERTIFICATED PILOT/AIRCRAFT OWNER HAD PERFORMED AN UNAUTHORIZED MODIFICATION TO THE WING STRUCTURE OF THE TWO-SEATER ULTRA-LIGHT AIRCRAFT. THE MANUFACTURER'S REPRESENTATIVE STATED THAT THEY HAD ADVISED AGAINST THE MODIFICATION AS IT WAS CONSIDERED UNSAFE AND WOULD WEAKEN THE STRUCTURE.

NTSB Probable Cause

IN-FLIGHT FAILURE OF THE OUTBOARD SECTION OF THE WING, AND THE LOSS OF AIRCRAFT CONTROL. DUE TO THE UNAUTHORIZED STRUCTURAL MODIFICATION BY THE PILOT/OWNER.

Full Narrative

THE AIRCRAFT WAS OBSERVED 'BOBBING UP AND DOWN' AS THE PILOT PERFORMED MANEUVERS DURING THE LOCAL PLEASURE FLIGHT. WITNESSES STATED THAT THEY HEARD A BANG AND SAW THE OUTBOARD SECTION OF THE RIGHT WING FOLD UP BEFORE THE AIRCRAFT DESCENDED INTO THE GROUND. THE NON-CERTIFICATED PILOT/AIRCRAFT OWNER HAD PERFORMED AN UNAUTHORIZED MODIFICATION TO THE WING STRUCTURE OF THE TWO-SEATER ULTRA-LIGHT AIRCRAFT. THE MANUFACTURER'S REPRESENTATIVE STATED THAT THEY HAD ADVISED AGAINST THE MODIFICATION AS IT WAS CONSIDERED UNSAFE AND WOULD WEAKEN THE STRUCTURE.

Flight

Event TypeAccident
Event Time16:30 EDT
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftSkytek Skyseeker MK II Skyseeker
Tail NumberUNREG
Aircraft CategoryAir
DamageDestroyed
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsBombardier · ROTEX MODEL · Reciprocating · 54
Seats2

People & Injuries

Injury Summary2 injuries (2 fatalities)
Fatal2
Serious0
Minor0
Uninjured0
Total2
Crew 1Age 43 · None

Conditions

ConditionsVMC
LightDaylight
Wind160°
Visibility10 sm
CeilingNone
Temperature / Dew Point68 F / 0 C
Altimeter29.00 inHg
Observation Time19:50
Weather SourceWFAC

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Appendix: Source Data